Resistance of Wheat Lines to Rhopalosiphum padi (Hemiptera: Aphididae) Under Laboratory Conditions

2012 ◽  
Vol 105 (2) ◽  
pp. 592-597 ◽  
Author(s):  
J. Razmjou ◽  
P. Mohamadi ◽  
A. Golizadeh ◽  
M. Hasanpour ◽  
B. Naseri
Keyword(s):  
Rhopalosiphum Padi ◽  
Laboratory Conditions ◽  
Wheat Lines

Resistance and susceptibility of some wheat lines to bird cherry-oat aphid Rhopalosiphum padi (Hemiptera: Aphididae)

2012 ◽  
Vol 47 (2) ◽  
pp. 111-118 ◽  
Author(s):  
Poune Mohamadi ◽  
Jabraeil Razmjou ◽  
Ali Golizadeh ◽  
Mehdi Hassanpour ◽  
Bahram Naseri
Keyword(s):  
Rhopalosiphum Padi ◽  
Wheat Lines

scholarly journals A prebreeding study of introgression spring bread wheat lines carrying combinations of stem rust resistance genes, Sr22+Sr25 and Sr35+Sr25

2021 ◽  
Vol 25 (7) ◽  
pp. 713-722
Author(s):  
S. N. Sibikeev ◽  
O. A. Baranova ◽  
A. E. Druzhin
Keyword(s):  
Bread Wheat ◽  
Agronomic Traits ◽  
Stem Rust Resistance ◽  
Puccinia Graminis ◽  
Spring Bread Wheat ◽  
Laboratory Conditions ◽  
One Year ◽  
Stem Rust Resistance Genes ◽  
Wheat Lines ◽  
Rust Resistance Genes

The Sr22, Sr35, and Sr25 genes attract the attention of bread wheat breeders with their effectiveness against Puccinia graminis f. sp. tritici race Ug99 and its biotypes. The effectiveness and impact of Sr22+Sr25 and Sr35+Sr25 gene combinations on agronomic traits have not yet been studied. In the present article, these traits were studied using the spring bread wheat lines L503/W3534//L503, L503/Sr35//L503/3/L503 carrying the Sr22+Sr25 and Sr35+Sr25 genes during 2016–2020. These lines were assessed for resistance to P. graminis f. sp. tritici under natural epiphytotics and to the Saratov, Lysogorsk and Omsk populations of the pathogen and to the PgtZ1 (TKSTF) and PgtF18.6 fungus isolates in laboratory conditions (TKSTF + Sr33). The presence of the studied Sr-genes was confirmed by using molecular markers. Prebreeding studies were conducted during 2018–2020 vegetation periods. Under the natural epiphytotics of the pathogen and in the laboratory conditions, the Sr22+Sr25 combination was highly effective, while Sr35+Sr25 was ineffective. For grain yield, the lines with the Sr22+Sr25 and Sr35+Sr25 genes were superior to the recipient cultivar L503 in one year (Sr22+Sr25 in 2019; Sr35+Sr25 in 2018), with a decrease in 2020, but in general there were no differences. For the period 2018–2020, both combinations showed a decrease in 1000 grains weight and an increase in the germination-earing period. The line with Sr22+Sr25 genes showed insignificant effects on gluten and dough tenacity, but the ratio of dough tenacity to extensibility was higher, and flour strength, porosity and bread volume were lower; in the line with Sr35+Sr25 genes, the gluten content was lower, but the strength, tenacity of the dough and the ratio of dough tenacity to extensibility were higher, flour strength and the porosity of the bread were at the recipient level, but the volume of bread was lower.

Impact of Diuraphis noxia and Rhopalosiphum padi (Hemiptera: Aphididae) on Primary Physiology of Four Near-Isogenic Wheat Lines

2009 ◽  
Vol 102 (1) ◽  
pp. 412-421 ◽  
Author(s):  
Tulio B. Macedo ◽  
Robert K. D. Peterson ◽  
David K. Weaver ◽  
Xinzhi Ni
Keyword(s):  
Rhopalosiphum Padi ◽  
Diuraphis Noxia ◽  
Wheat Lines

Grain aphids in New Brunswick. IV. Effects of malathion and 2,4-D amine on aphid populations and on yields of oats and barley

1969 ◽  
Vol 47 (3) ◽  
pp. 423-426 ◽  
Author(s):  
Jean B. Adams ◽  
Margaret E. Drew
Keyword(s):  
New Brunswick ◽  
Rhopalosiphum Padi ◽  
Aphid Infestation ◽  
Laboratory Conditions ◽  
Different Levels ◽  
Aphid Populations

Aphid populations on oats (Fundy and Stormont) and barley (Charlottetown 80) were studied in the field and yields of these grains examined under the different levels of aphid infestation resulting from applications of malathion and 2,4-D amine to the crop.Two species of aphid, Rhopalosiphum padi (L.) and Macrosiphum avenae (Fab.), occurred on the grains, and the greatest populations developed on barley. In all cases highest numbers were associated with applications of 2,4-D amine. Applications of this herbicide to similar aphids under laboratory conditions showed that the species differed in their responses as measured by reproduction and longevity.One malathion treatment, applied when aphids were dispersing into the field, reduced ensuing aphid numbers on oats by 29% and on barley by 64%. Yields of oats were increased by 47% and of barley 32% when malathion alone was used. When malathion and 2,4-D amine were applied together, aphid results and yield results were confusing.In all treatments, aphid populations collapsed abruptly once the grain panicle emerged, and in no case did aphids persist more than 10 weeks on either grain.

Resistance to Rhopalosiphum padi (Homoptera: Aphididae) in Triticale and Triticale-Derived Wheat Lines Resistant to Diuraphis noxia (Homoptera: Aphididae)

2007 ◽  
Vol 42 (2) ◽  
pp. 217-227 ◽  
Author(s):  
Louis S. Hesler ◽  
Scott D. Haley ◽  
Kabwe K. Nkongolo ◽  
Frank B. Peairs
Keyword(s):  
Population Growth ◽  
Development Time ◽  
Rhopalosiphum Padi ◽  
Russian Wheat Aphid ◽  
Diuraphis Noxia ◽  
Significant Source ◽  
Choice Tests ◽  
Strong Source ◽  
Wheat Lines

Rhopalosiphum padi (L.) (bird cherry-oat aphid) and Diuraphis noxia (Mordvilko) (Russian wheat aphid) are common aphid pests of wheat and can cooccur at relatively high levels within wheat fields. Resistance to both aphids has been identified in several triticale accessions. We conducted experiments to identify and characterize antibiosis-type resistance to R. padi in additional triticale lines and to test R. padi-resistance levels in several backcrossed, triticale-derived lines of D. noxia-resistant wheat. Triticale accessions ‘6A-558’, ‘H85-734’ and ‘M86-6174’ were identified with moderate levels of antibiosis to R. padi. All three accessions limited R. padi population growth relative to ‘Arapahoe’ over 13 d. 6A-558 increased development time of R. padi compared to that on Arapahoe, and 6A-558, H85-734 and M86-6174 each decreased the number of nymphs produced by R. padi over 7 d. Additional tests confirmed ‘N1185’ triticale as a strong source of resistance to R. padi, and showed that ‘Lamar’ wheat was not resistant to R. padi. Tests of wheat lines derived from crosses between N1185 and Lamar and then selected for resistance to D. noxia showed that three of 13 lines reduced the number of R. padiper plant, with resistance levels comparable to N1185 in two lines. Nymphiposition by R. padi measured over a 24-h period did not differ among any lines in no-choice tests. The results provide further support that triticale is a significant source of resistance to R. padi, but further work is needed to understand transference of R. padi-resistance from triticale to wheat.

Chromosomal location of genes for resistance to powdery mildew in Chinese wheat lines Jieyan 94-1-1 and Siyan 94-1-2

Hereditas ◽  
2002 ◽  
Vol 136 (3) ◽  
pp. 212-218 ◽  
Author(s):  
XIU QIANG HUANG ◽  
SAI L. K. HSAM ◽  
FRIEDRICH J. ZELLER
Keyword(s):  
Powdery Mildew ◽  
Chromosomal Location ◽  
Wheat Lines ◽  
Chinese Wheat

Human drug taking under controlled laboratory conditions.

1988 ◽  
Author(s):  
Marian W. Fischman ◽  
Richard W. Foltin ◽  
Joseph V. Brady
Keyword(s):  
Laboratory Conditions
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